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19135085 = 516692293
BaseRepresentation
bin100100011111…
…1101001101101
31100000011101212
41020333221231
514344310320
61522044205
7321434264
oct110775155
940004355
1019135085
11a88a522
1264a9665
133c6c848
1427815db
151a2e9c5
hex123fa6d

19135085 has 8 divisors (see below), whose sum is σ = 22985880. Its totient is φ = 15292224.

The previous prime is 19135079. The next prime is 19135087. The reversal of 19135085 is 58053191.

It can be written as a sum of positive squares in 4 ways, for example, as 996004 + 18139081 = 998^2 + 4259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19135085 - 222 = 14940781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19135087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7199 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (2873235).

Almost surely, 219135085 is an apocalyptic number.

It is an amenable number.

19135085 is a deficient number, since it is larger than the sum of its proper divisors (3850795).

19135085 is a wasteful number, since it uses less digits than its factorization.

19135085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 19135085 is about 4374.3668113225. The cubic root of 19135085 is about 267.4710598441.

The spelling of 19135085 in words is "nineteen million, one hundred thirty-five thousand, eighty-five".

Divisors: 1 5 1669 2293 8345 11465 3827017 19135085